<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<div id="container">

    <todo-item/>
</div>

<script src="https://unpkg.com/vue@next"></script>
<script type="text/javascript">

    const demoApp = {
        data() {
            return {}
        },
        mounted() {

        },
        methods: {}

    }

    const app = Vue.createApp(demoApp)
    app.component('todo-item', {
        template: '<li>this is a component</li>'
    })

    app.mount('#container')
</script>

</body>
</html>
